WEIGHT COMPENSATION DEVICE,申请号EP19980966927-传众专利搜索

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发明名称	WEIGHT COMPENSATION DEVICE
摘要
申请公布号	EP1042582(A1)	申请公布日期	2000.10.11
申请号	EP19980966927	申请日期	1998.12.28
申请人	WEATHERFORD/LAMB INC.	发明人	SPREIJ, LEENDERT;ALBRIGHT, STEVEN, LEE;BEARB, JEAN, DONALD;LEICHT, FREDERICK, MARION;HAYES, MICHAEL, WARREN;BIRDWELL, JOHN, CLEVELAND
分类号	E21B19/06;E21B19/086;E21B19/16;(IPC1-7):E21B19/16;E21B19/08	主分类号	E21B19/06
代理机构		代理人
主权项
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